Jen,

It's the original card, about 8 years old.

I talked with an Apple tech at the VAR where the machine was purchased and he thought the card was bad, but without actual testing it, it was just a guess.

But I fear I will never know. After mucking about too long, I connected the machine directly to the router. This required some moving of furniture, but my wife is strong. cool





Harv
27" i7 iMac (10.13.6), iPhone Xs Max (12.1)

Those who can make you believe absurdities can make you commit atrocities. ~Voltaire